Question

**Please Help Don't know how to begin**
Write the Given and Prove:
1)IF ALL SIDES OF A 4 SIDED FIGURE ARE CONG. THEN THE LINES JOINING THE OPPOSITE VERTICES ARE PERPENDICULAR.

2) The bisector of the vertex angle of an Isosceles triangle is perpendicular to the base.

3) The median of the base of an isosceles triangle divides the triangle into 2 cong. triangles.

Answer 1

So those are 3 different proofs

Answer 2

yes

Answer 3

for #1, since all the sides are congruent, the shape is a rhombus
see if below proof helps :
https://www.youtube.com/watch?v=GDcVdBAnBdU

Answer 4

ok so for #1 the Given : ABCD IS A ROMBUS
PROVE: AC PERP BD

is that correct?

Answer 5

@ganeshie8

Answer 6

Oh you only need to write the `Given and Prove` statements is it ?
you don't have to actually prove ?

Answer 7

for #1, write something like below :-
```
Given : All sides of a quadrilateral are congruent
Prove : diagonals are perpendicular
```